create_module

CREATE_MODULE(2)            Linux Programmer's Manual           CREATE_MODULE(2)



NAME
       create_module - create a loadable module entry

SYNOPSIS
       #include <linux/module.h>

       caddr_t create_module(const char *name, size_t size);

       Note: No declaration of this system call is provided in glibc headers;
       see NOTES.

DESCRIPTION
       Note: This system call is present only in kernels before Linux 2.6.

       create_module() attempts to create a loadable module entry and reserve
       the kernel memory that will be needed to hold the module.  This system
       call requires privilege.

RETURN VALUE
       On success, returns the kernel address at which the module will reside.
       On error, -1 is returned and errno is set to indicate the error.

ERRORS
       EEXIST A module by that name already exists.

       EFAULT name is outside the program's accessible address space.

       EINVAL The requested size is too small even for the module header
              information.

       ENOMEM The kernel could not allocate a contiguous block of memory large
              enough for the module.

       ENOSYS create_module() is not supported in this version of the kernel
              (e.g., the kernel is version 2.6 or later).

       EPERM  The caller was not privileged (did not have the CAP_SYS_MODULE
              capability).

VERSIONS
       This system call is present on Linux only up until kernel 2.4; it was
       removed in Linux 2.6.

CONFORMING TO
       create_module() is Linux-specific.

NOTES
       This obsolete system call is not supported by glibc.  No declaration is
       provided in glibc headers, but, through a quirk of history, glibc
       versions before 2.23 did export an ABI for this system call.  Therefore,
       in order to employ this system call, it was sufficient to manually
       declare the interface in your code; alternatively, you could invoke the
       system call using syscall(2).

SEE ALSO
       delete_module(2), init_module(2), query_module(2)

COLOPHON
       This page is part of release 5.11 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.



Linux                              2021-03-22                   CREATE_MODULE(2)